Yoshiyuki Kobayashi

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Fuji, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of making profiled work of aluminum or aluminum alloy by ext...
- Patent number 4,116,030
- Issue date Sep 26, 1978
- Kabushikikaisha Nippon Keikinzoku Sogokenkyusho
- Yoshiyuki Kobayashi
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...